| Role of venom and ovarian proteins in immune suppression of Ostrinia furnacalis （Lepidoptera： Pyralidae） larvae parasitized by Macrocentrus cingulum （Hymenoptera： Braconidae）, a polyembryonic parasitoid |
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| 作者姓名： | YONG LI JIAN-FENG LU CONG-JING FENG XIN KE WEN-JUN FU |
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| 作者单位： | [1]Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, [2]School of Bioteclmology and Food Engineering, Hefei University of Technology, Hefei [3]School of Horticulture and Plant Protection, Yangzhou University, Yangzhou, China |
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| 基金项目： | Acknowledgments We thank X.G. Qiu, and Z.L. Qiu, for culturing insects. This study was supported by the National Natural Science Foundation of China （30370195; 30571248）. |
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| 摘 要： |
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| 关 键 词： | 亚洲玉米螟 幼虫 免疫抑制 腰带长体茧蜂 产卵寄生 毒液蛋白 卵蛋白 多胚拟寄生物 |
| 修稿时间： | 2007-01-15 |
Role of venom and ovarian proteins in immune suppression of Ostrinia furnacalis (Lepidoptera: Pyralidae) larvae parasitized by Macrocentrus cingulum (Hymenoptera: Braconidae), a polyembryonic parasitoid |
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| Authors: | YONG LI JIAN-FENG LU CONG-JING FENG XIN KE WEN-JUN FU |
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| Institution: | Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, China;School of Biotechnology and Food Engineering, Hefei University of Technology, Hefei, China;School of Horticulture and Plant Protection, Yangzhou University, Yangzhou, China |
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| Abstract: | Venom and ovarian proteins in braconid and ichneumonid wasps play an important role in the successful parasitism of their host, especially for immune suppression immediately after oviposition. In this study, we compared the effect of venom and ovarian proteins collected from the female wasps of Macrocentrus cingulum, a polyembryonic parasitoid of the larvae of Ostriniafunacalis, on the encapsulation capacity of Sephadex A- 25 beads at 4 h and 24 h post-injection both in vivo and in vitro. The results showed that the ovarian proteins significantly interfered with the encapsulation capacity of hemocytes in a dose-dependent manner. Spreading and viability of hemocytes in O. furnacalis was not disrupted by venom and ovarian proteins at various concentrations injected. It seems likely that the ovarian proteins from M. cingulum play a role in suppressing the encapsulation capacity of host hemocytes. |
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| Keywords: | encapsulation Macrocentrus cingulum Ostriniafunacalis ovarian proteins spreading venom |
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